Results 21 to 30 of about 485 (157)

Editorial: Coping With Environmental Fluctuations: Ecological and Evolutionary Perspectives [PDF]

open access: yesFrontiers in Physiology, 2020
Sylvain Giroud   +3 more
doaj   +2 more sources

Theme and Variations: Heterothermy in Mammals [PDF]

open access: yesIntegrative and Comparative Biology, 2014
This collection of articles is focused on the evolutionary dynamics of heterothermy in mammals, specifically torpor and hibernation. Topics cover a wide range from evolutionary genetics, physiology, ecology, and applications to human health.
Sandra L, Martin, Anne D, Yoder
openaire   +2 more sources

Avian Heterothermy: A Review of Patterns and Processes

open access: yesIntegrative And Comparative Biology, 2023
Synopsis Many birds reduce rest-phase energy demands through heterothermy, physiological responses involving facultative, reversible reductions in metabolic rate and body temperature (Tb). Here, we review the phylogenetic distribution and ecological contexts of avian heterothermy.
Andrew E McKechnie   +2 more
openaire   +2 more sources

Adaptive evolution of Leptin in heterothermic bats. [PDF]

open access: yesPLoS ONE, 2011
Heterothermy (hibernation and daily torpor) is a key strategy that animals use to survive in harsh conditions and is widely employed by bats, which are found in diverse habitats and climates.
Lihong Yuan   +9 more
doaj   +1 more source

Heterothermy in growing king penguins [PDF]

open access: yesNature Communications, 2011
A drop in body temperature allows significant energy savings in endotherms, but facultative heterothermy is usually restricted to small animals. Here we report that king penguin chicks (Aptenodytes patagonicus), which are able to fast for up to 5 months in winter, undergo marked seasonal heterothermy during this period of general food scarcity and slow-
Eichhorn, Götz   +6 more
openaire   +4 more sources

Variable Climates Lead to Varying Phenotypes: “Weird” Mammalian Torpor and Lessons From Non-Holarctic Species

open access: yesFrontiers in Ecology and Evolution, 2020
Mammalian heterotherms, species that employ short or long periods of torpor, are found in many different climatic regions. Although the underlying physiological mechanisms of heterothermy in species from lower latitudes (i.e., the tropics and southern ...
Julia Nowack   +4 more
doaj   +1 more source

Heart rate reveals torpor at high body temperatures in lowland tropical free-tailed bats [PDF]

open access: yesRoyal Society Open Science, 2017
Reduction in metabolic rate and body temperature is a common strategy for small endotherms to save energy. The daily reduction in metabolic rate and heterothermy, or torpor, is particularly pronounced in regions with a large variation in daily ambient ...
M. Teague O'Mara   +5 more
doaj   +1 more source

Body Temperature and Activity Rhythms Under Different Photoperiods in High Arctic Svalbard ptarmigan (Lagopus muta hyperborea)

open access: yesFrontiers in Physiology, 2021
Organisms use circadian rhythms to anticipate and exploit daily environmental oscillations. While circadian rhythms are of clear importance for inhabitants of tropic and temperate latitudes, its role for permanent residents of the polar regions is less ...
Daniel Appenroth   +5 more
doaj   +1 more source

Heterothermy in Afrotropical Mammals and Birds: A Review [PDF]

open access: yesIntegrative and Comparative Biology, 2011
(Uploaded by Plazi for the Bat Literature Project) Recent years have seen a rapid increase in the number of Afrotropical endotherms known to avoid mismatches between energy supply and demand by using daily torpor and/or hibernation. Among mammals, heterothermy has been reported in 40 species in six orders, namely Macroscelidea, Afrosoricida, Rodentia ...
McKechnie, Andrew E.   +1 more
openaire   +3 more sources

Body Temperature Frequency Distributions: A Tool for Assessing Thermal Performance in Endotherms?

open access: yesFrontiers in Physiology, 2021
There is increasing recognition that rather than being fully homeothermic, most endotherms display some degree of flexibility in body temperature. However, the degree to which this occurs varies widely from the relatively strict homeothermy in species ...
D.L. Levesque, J. Nowack, J.G. Boyles
doaj   +1 more source

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